M31 Andromeda RGB+Ha (Aaron Freimark)

Celestial hemisphere: Northern · Constellation: Andromeda (And) · Contains: Andromeda Galaxy · M 110 · M 31 · M 32 · NGC 205 · NGC 206 · NGC 221 · NGC 224

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M31 Andromeda RGB+Ha

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M31 Andromeda RGB+Ha

This week's image is the result of 163 individual shots of the Andromeda Galaxy. The red splotches are star-forming nebula — just like the nebula in our own Milky Way that I take so many photos of. Also visible are two other galaxies, which are smaller neighbors of Andromeda. This light took 2 ½ million years to reach us — it is that far away.

I love this image because it shows how far I've come since picking up this hobby earlier in the year. In the comments I'll post my original shot of Andromeda from early July. It's the same equipment, I've just learned to use it better.

Processing steps:

1. Calibrate using Weighted Batch Processing

2. subframe selector

3. StarAlign

4. Local Normalization

5. Image Integration

6. Drizzle Integration

7. Dynamic Crop

8. Dynamic Background Extraction

9. EZ decon

10. EZ denoise

11. LinearFit

12. Arcsinhstretch

13. EZ Star Reduce

14. PixelMath to combine R & G & B & Ha

15. Photometric Color Calibration

16. Curves Transformation with residual mask

Mid-Hudson Astronomical Association (MHAA)

Please note: The following tables are updated every 24 hours.

Distribution of astrophotographers

This table shows the number of distinct astrophotographers who have been assigned and IOTD/TP award compared to the total number of images awarded.
	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

Distribution of subject types

This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
Landscape

Distribution of data sources

This table shows the distribution of awards per data source, compared to the popularity of images acquired from that data source.
	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
Promotions by Submitters When 3 distinct Submitters promote the image, it moves on to the next stage of the process: evaluation for Top Pick status. This requirement, in addition to anonymization of images and distribution to only a subset of them, prevents biases and ensures that the best images are selected.
Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	Advanced success
Started	...
Astrometry.net job	3920297
PixInsight job	ZQT9CTGZ1YXUH9C2CVVZY21OLR7TDGIL
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	00h42m50s.70
RA (top/left)	00h47m40s.38
RA (top/right)	00h46m21s.11
RA (bottom/right)	00h37m50s.51
RA (bottom/left)	00h39m25s.85

Dec (center)	+41°16′12″.9
Dec (top/left)	+40°20′52″.4
Dec (top/right)	+42°23′45″.7
Dec (bottom/right)	+42°10′55″.2
Dec (bottom/left)	+40°08′26″.8

Image Index:

Contribution Index (beta):

M31 Andromeda RGB+Ha

M31 Andromeda RGB+Ha

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Image Index:

Contribution Index (beta):

M31 Andromeda RGB+Ha

M31 Andromeda RGB+Ha

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

In these public groups

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